J S Weese1, R J Reid-Smith, B P Avery, J Rousseau. 1. Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada. jsweese@uoguelph.ca
Abstract
AIMS: This study was designed to evaluate the prevalence of Clostridium difficile contamination of retail chicken. METHODS AND RESULTS: Chicken legs, thighs and wings were purchased using a standardized method from retail outlets across Ontario, Canada. Selective culture was used for qualitative and quantitative detection of C. difficile. Clostridium difficile was isolated from 26/203 (12.8%) chicken samples; 10/111 (9.0%) thighs, 13/72 (18%) wings and 3/20 (15%) legs (P = 0.19). All isolates were ribotype 078, a strain that has been associated with food animals and potentially community-associated disease in humans. All positive samples were positive only on enrichment culture. CONCLUSIONS: Clostridium difficile could be found relatively commonly in retail chicken meat, albeit at low levels. SIGNIFICANCE AND IMPACT OF THE STUDY: This is the first study to report C. difficile in chicken meat. Contamination of meat with C. difficile strains implicated in human infections raises concerns about food as a source of C. difficile infection. The relevance of food contamination is completely unclear at this point but food should be investigated as a source of infection.
AIMS: This study was designed to evaluate the prevalence of Clostridium difficile contamination of retail chicken. METHODS AND RESULTS:Chicken legs, thighs and wings were purchased using a standardized method from retail outlets across Ontario, Canada. Selective culture was used for qualitative and quantitative detection of C. difficile. Clostridium difficile was isolated from 26/203 (12.8%) chicken samples; 10/111 (9.0%) thighs, 13/72 (18%) wings and 3/20 (15%) legs (P = 0.19). All isolates were ribotype 078, a strain that has been associated with food animals and potentially community-associated disease in humans. All positive samples were positive only on enrichment culture. CONCLUSIONS:Clostridium difficile could be found relatively commonly in retail chicken meat, albeit at low levels. SIGNIFICANCE AND IMPACT OF THE STUDY: This is the first study to report C. difficile in chicken meat. Contamination of meat with C. difficile strains implicated in human infections raises concerns about food as a source of C. difficileinfection. The relevance of food contamination is completely unclear at this point but food should be investigated as a source of infection.
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